KYE Systems Corp. Genius SP-J330 User manual

Service Guide SP-J330
SERVICE GUIDE
KYE SYSTEM CORP
Version 1.0 Page 1 of 22

Service Guide SP-J330
Revision History
Version Date Change
1.0 12/12/2008
Version 1.0 Page 2 of 22

Service Guide SP-J330
Revision History………………………………………………………………….2
Table of contents……………………………………………………………...…3
Getting Start…………………………………………………….………………...4
Conventions Used in this Guide…………………………………………….…4
Safety Precautions………………………………………………………………4
Chapter 1. How to Handle Defective Returns……………………………….5
1.2 Problem………………………………………………………………………6
1.2.1 No power，LED （indicator）unlighted……………………………….7
1.2.2 No sound…………………………………………………………….…….8
1.2.3 Right channel no sound….……….……….……….……….……….……9
1.2.4 Left channel no sound….……….……….……….……….……….……10
1.2.5 VR no use……..………………………………………………………..…11
1.2.6 Noise………………………….……………………….……………...….12
1.2.7 LED indicators no light……………………………………….……..…..13
1.2.8 Input jack no use……..……………………………………….……..…..14
1.2.9 No effect when turning on 3D knob.…………………………..…..…..15
Chapter 2. Specification…………………………………………………..……16
Chapter 3. Block diagram…………………………………………..………….17
Chapter 4. Exploded view………………………………………………………18
Right speaker………………………………………………………………...….18
Left speaker…………………………..………………..…….…………….……19
Chapter 5. Part list…………………………………… …………….…………...20
Right speaker………………………………………………….……………….. 20
Left speaker……………………………………………………………………...20
Chapter 6 Important notes……………………………………………………….21
Chapter 7 Schematic diagram……………………………………………………22
Version 1.0 Page 3 of 22
Table of Contents

Service Guide SP-J330
Getting Started
Conventions Used in the Guide
Pay Special Attention: Instructions that are important to remember and may prevent
mistakes.
Caution: Information that, if not followed, may result in damage to the product.
Safety Precautions
The following precautions should be observed in handing the speaker described in
this guide:
Place the speakers on a flat, level and stable surface.
Do not place the speakers in environments subject to mist, smoke, vibration,
excessive dust, salty or greasy air, or other corrosive gases and fumes.
Do not drop or jolt the speakers.
Do not allow anything to drop into the subwoofer case through its ventilator, as it
could result in fatal electric shock or fire.
Place the unit far enough from other equipments for good heat dissipation.
Do not perform any maintenance with wet hand.
Preventforeignsubstance,such as water, other liquids or chemical, from entering
the speakers while performing maintenance procedures on the speakers.
Version 1.0 Page 4 of 22

Service Guide SP-J330
Chapter 1. How to Handle Defective Returns
1.1 Overview
Function NG Function OK
FunctionNG
FunctionOK
Version 1.0 Page 5 of 22
Receiving Defective speaker from customers
Return the speakers with proper
repacking to customers
Verifying problems
Proceeding
Necessary tests
Analyzing possible
Malfunction cause
Deciding & proceeding the
Rectification methods
Replace necessary
Defective parts
Necessary tests
Verifying problems
Proceeding

Service Guide SP-J330
1.2 Problems
Item Problem Description
1.2.1 No power，LED （indicator）no light
1.2.2 No sound
1.2.3 Right channel no sound
1.2.4 Left channel no sound
1.2.5 No effect when rotating VR
1.2.6 Noise
1.2.7 LEDindicatorsnolight
1.2.8 Input jack no use
1.2.9 No effect when turning on 3D knob.
Version1.0 Page6of22

Service Guide SP-J330
*Attention
Please follow the numbered sequence marked within parenthesis given in
individual
Flow chat in that this is the best-recommended sequence to rectify the problems.
1.2.1 No power，LED （indicator）unlighted
Problem
Analyze
and
identify
the
causes
Solutions
Version 1.0 Page 7 of 22
Repair or replace
1.Defective AC
cable
2.Defective
transformer
1. Loose connection between transformer
secondary wire and PT1 on PW PCB
2. Loose connection between JK7 in PW PCB
and JK6 in AMP PCB
resolder or replace
No power，LED （indicator）unlighted
Repair or replace
2. defective VR1 in AMP PCB
1. PCB Copper foil broken

Service Guide SP-J330
1.2.2 no sound
Problem
Analyze and
identify the
causes
]
Solutions
Version 1.0 Page 8 of 22
1. PCB broken, dry-soldered, or
short-circuited
2. Input cable connected well or not
No sound
Repair, resolder or
replace
1.Power supply for IC1 in AMP PCB normal or
not; EC13, IC1,VR2 defective, dry-soldered or
short-circuited
3.Or JK4, JK5 in JK PCB defective
2. Connection between JK1 in AMP PCB and
JK2 in JK PCB well or not
Repair or replace

Service Guide SP-J330
1.2.3 Right channel no sound
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 9 of 22
1. Input cable, or input jack
damaged or defective
2. Right Speaker cable
damaged or defective
3. Right driver unit dry-soldered
or defective
1. PCB broken, dry-soldered, or short-circuited
2. Defective VR1,VR2 in AMP PCB
3. JK4, JK5 in JK PCB defective
4. Loose connection between JK1 in AMP PCB and JK2 in
JK PCB
5. IC1 in AMP PCB defective
Replace or
replace
Re-connect ,
replace or repair
Right channel no sound

Service Guide SP-J330
1.2.4 Left channel no sound
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 10 of 22
Re-connect,
replace or repair
1. Input cable, or input jack
damaged or defective
2. Left Speaker cable damaged
or defective
3. Left driver unit dry-soldered or
defective
1. PCB broken, dry-soldered, or short-circuited
2. Defective VR1, VR2 in AMP PCB
3. JK4, JK5 in JK PCB defective
4. Loose connection between JK1 in AMP PCB and JK2 in
JK PCB
5. IC1 in PW PCB defective
Repair or
replace
Left channel no sound

Service Guide SP-J330
1.2.5 No effect when rotating VR
Problem
Analyze and
identify the
causes
Solutions
-
Version 1.0 Page 11 of 22
No effect when rotatin
g
VR
VR1/VR2 in PW PCB defective or not
VR-related copper foil
broken/dry-soldered or not
Repair or replace Repair or replace

Service Guide SP-J330
1.2.6. Noise
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 12 of 22
Hum noise
1. D1，D2，D3，D4，EC14 in PW PCB
dry-soldered or defective
2. Power supply for IC1 normal or not
3. PCB broken or dry-soldered
Repair Repair or replace
2. Driver units damaged
3. EC5，EC12 in AMP PCB defective
1. Or caused by the vibration from too
long lead wire of driver units
General noise
Noise

Service Guide SP-J330
1.2.7. LED indicators no light
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 13 of 22
Check and replace
2. R18 or LED defective or dry-soldered
1. Defective, dry-soldered, or broken PCB
LED indicators no li
g
ht

Service Guide SP-J330
1.2.8. Input jack no use
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 14 of 22
Check and replace or
re-solder
In
p
ut
j
ack no use
1. JK4 in JK PCB defective or damaged
2. JK4-related cooper foil broken or dry-soldered

Service Guide SP-J330
1.2.9. No effect when turning on 3D knob
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 15 of 22
Check and replace or
re-solder
No effect when turnin
g
on 3D knob
1. SW1/R7 in PW PCB defective or damaged
2. SW1-related cooper foil broken or dry-soldered

Service Guide SP-J330
Normal
DESCRIPTION UNIT
R L
LIMIT
RATED OUTPUT POWER @THD 10% W 4.6 4.5 ≧4
SENSITIVITY (1KHz) @RATED O/P POWER m V 500 500 500±50
SENSITIVITY (1KHz) @1W O/P POWER m V 210 220 220±22
MAX INPUT LEVEL@1% THD m V 400 410 400±40
DISTOPTION@1kHz 1W OUT % 0.25 0.25 ≦0.5
FREQUENCY RESPONSE(1KHz -3DB ) LOW Hz 20 20 20±10
FREQUENCY RESPONSE(1KHz -3DB ) HI KHz 65 65 65±20
S/N@RATED O/P POWER d B 79 79 ≧70
CHANNEL UNBALANCE @REF O/P POWER d B 0.5 0.5 ≦1
CHANNEL SEPARATION(ONE
CHANNELIN;OTHER CHANNEL INPUT
SHORTING
d B 48 50 ≧40
HUM NOISE (VOLUME MAX;INPUT
SHORTING) m V 0.5 0.5 ≦2
HUM NOISE (VOLUME MIN INPUT SHORTING) m V 0.25 0.25 ≦1
Version 1.0 Page 16 of 22
Chapter 2. Specifications

Service Guide SP-J330
Version 1.0 Page 17of 22
Chapter 3 Block diagram

Service Guide SP-J330
Right speaker
Version 1.0 Page 18 of 22
Chapter 4 Exploded view

Service Guide SP-J330
Left speaker
Version 1.0 Page 19 of 22
Chapter 4 Exploded view

Service Guide SP-J330
Right speaker
Ref. NO Description Part NO.
1 cloth cover EP41010167
2 driver unit, A-50-12, 2" 4Ω6W EP16020060
3 screw, 3*12PA EP24100036
4 front panel, hi-glossy black EP40310339
5 LED cover, transparent, KA-814-2.1 EP41610019
screw, 3*6BM EP24030017
6
Jack, J3518-500, black EP1A090012
7
Jack, AST-404, black EP1A090042
8
PCB, AMP JK PW EP15330001
9
Screw, 3*10PWA EP24120002
10
backcover EP40510102
11
rubber foot mat EP73060055
12
13 scew, 3*8BA EP24010014
14
A
L heat sink, W32.5*H24.5*D59MM EP23011052
15 TA8207 IC EP1C010250
16 switch EP19010001
plastic piece to provent air flow
17 EP41110143
sponge, 18*18*15MM EP73010081
18
19 VR, 1230KGS-B10K-L12 EP1B010081
20 VR, RW1660GOJH-B50K-L12 EP1B010080
pressingknob,silver EP40754002E
21
22 rotating knob, silver EP40714186A
Left speaker
Ref. NO Description Part NO.
1 cloth cover EP41010167
2 screw, 3*8BA EP24010014
3 driver unit, A-50-12, 2" 4Ω6W EP16020060
4 screw, 3*12PA EP24100036
5 font panel, hi-glossy black EP40410149
PCB, 94HB, AMP JK PW EP15330001
6
7 Screw, 3*12PWA EP24120072
transformer, 230V 50HZ/11V-1.2A EP13500041
8
backcover EP40610394
9
screw, 3*10PWA EP24120002
10
rubber foot mat EP73060055
11
Version 1.0 Page 20 of 22
Cha
p
ter 5 Part list